Answer:
Secondary succession because it is the series of community changes which take place on a previously colonized, but disturbed or damaged habitat.
Explanation:
A) magnesium > zinc > iron > copper.
Metamorphic rocks have been put under great pressure, heated, squashed or stretched, and fossils do not usually survive these extreme conditions.
AB & O
Caro means expensive in spanish
(a) A and D
(b) B
(c) A
Hope this helps